ci: set up env variables for rust workflows

.github/workflows/rust.yml

@@ -6,28 +6,6 @@ on:
     types: [opened, synchronize, reopened, ready_for_review]
     branches: [main, dev]
 
-env:
-  CARGO_TERM_COLOR: always
-  # Disable incremental compilation.
-  #
-  # Incremental compilation is useful as part of an edit-build-test-edit cycle,
-  # as it lets the compiler avoid recompiling code that hasn't changed. However,
-  # on CI, we're not making small edits; we're almost always building the entire
-  # project from scratch. Thus, incremental compilation on CI actually
-  # introduces *additional* overhead to support making future builds
-  # faster...but no future builds will ever occur in any given CI environment.
-  #
-  # See https://matklad.github.io/2021/09/04/fast-rust-builds.html#ci-workflow
-  # for details.
-  CARGO_INCREMENTAL: 0
-  # Allow more retries for network requests in cargo (downloading crates) and
-  # rustup (installing toolchains). This should help to reduce flaky CI failures
-  # from transient network timeouts or other issues.
-  CARGO_NET_RETRY: 10
-  RUSTUP_MAX_RETRIES: 10
-  # Don't emit giant backtraces in the CI logs.
-  RUST_BACKTRACE: short
-
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
@@ -43,6 +21,10 @@ jobs:
     env:
       RUSTFLAGS: -D warnings
     steps:
+      - uses: actions/checkout@v4
+        with:
+          repository: lurk-lab/ci-workflows
+      - uses: ./.github/actions/ci-env
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: taiki-e/install-action@nextest
@@ -84,6 +66,10 @@ jobs:
       NVIDIA_DRIVER_CAPABILITITES: compute,utility
       EC_GPU_FRAMEWORK: cuda
     steps:
+      - uses: actions/checkout@v4
+        with:
+          repository: lurk-lab/ci-workflows
+      - uses: ./.github/actions/ci-env
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: taiki-e/install-action@nextest
@@ -114,6 +100,10 @@ jobs:
       NVIDIA_DRIVER_CAPABILITITES: compute,utility
       EC_GPU_FRAMEWORK: opencl
     steps:
+      - uses: actions/checkout@v4
+        with:
+          repository: lurk-lab/ci-workflows
+      - uses: ./.github/actions/ci-env
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: taiki-e/install-action@nextest